Include time elapsed since start of a remoting session in each log entry.

remoting/webapp/crd/js/log_to_server.js

Index: remoting/webapp/crd/js/log_to_server.js
diff --git a/remoting/webapp/crd/js/log_to_server.js b/remoting/webapp/crd/js/log_to_server.js
index 8b87f1b5c4efc7273b3cb4ce5f43f36ae5926294..c446ec3b09ed9bea462aa6b6a469cda300d3cc92 100644
--- a/remoting/webapp/crd/js/log_to_server.js
+++ b/remoting/webapp/crd/js/log_to_server.js
@@ -78,10 +78,8 @@ remoting.LogToServer.prototype.logClientSessionStateChange =
       (this.sessionStartTime_ != 0)) {
     entry.addSessionDurationField(
         (new Date().getTime() - this.sessionStartTime_) / 1000.0);
-    if (remoting.LogToServer.isEndOfSession_(state)) {
-      this.sessionStartTime_ = 0;
-    }
   }
+
   this.log_(entry);
   // Don't accumulate connection statistics across state changes.
   this.logAccumulatedStatistics_();
@@ -90,6 +88,7 @@ remoting.LogToServer.prototype.logClientSessionStateChange =
   if (remoting.LogToServer.isEndOfSession_(state)) {
     this.clearSessionId_();
   }
+
 };
 
 /**
@@ -104,13 +103,12 @@ remoting.LogToServer.prototype.setConnectionType = function(connectionType) {
 /**
  * @param {remoting.SignalStrategy.Type} strategyType
  * @param {remoting.FallbackSignalStrategy.Progress} progress
- * @param {number} elapsedTimeInMs
  */
 remoting.LogToServer.prototype.logSignalStrategyProgress =
-    function(strategyType, progress, elapsedTimeInMs) {
+    function(strategyType, progress) {
   this.maybeExpireSessionId_();
   var entry = remoting.ServerLogEntry.makeSignalStrategyProgress(
-      this.sessionId_, strategyType, progress, elapsedTimeInMs);
+      this.sessionId_, strategyType, progress);
   this.log_(entry);
 };
 
@@ -203,6 +201,10 @@ remoting.LogToServer.prototype.logAccumulatedStatistics_ = function() {
  * @param {remoting.ServerLogEntry} entry
  */
 remoting.LogToServer.prototype.log_ = function(entry) {
+  // Log the time taken to get to this point from the time this session started.
+  var elapsedTimeInMs = new Date().getTime() - this.sessionStartTime_;
+  entry.addElapsedTimeMs(elapsedTimeInMs);
+
   // Send the stanza to the debug log.
   console.log('Enqueueing log entry:');
   entry.toDebugLog(1);